Suppose you already have a solid foundation so it shouldn't take you a long time to learn these technologies. You already know some programming languages, algorithms and DSs, SOLID, OOP, databases, Web dev, etc.
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I'm less looking for a trick and more about I just want to make money asap with the least overhead possible
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So wouldn't learning something like AI be a viable option since most layoffs have something to do with AI?
AI has almost nothing to do with the recent layoffs. Interest rates, past over-hiring, and propping up stock prices drive the layoffs.
You can try to jump on the AI bandwagon and ride that bubble out but without experience in the field I think you have a better chance of winning the lottery than getting a job in AI.
Any technology you can pick up in three months that would secure a job "right away" would already have hundreds of thousands of people doing the same thing, competing for the same jobs. You won't find any shortcut or one weird trick no one else knows about to get a job.
You may have noticed the short supply of tech jobs right now, and lots of people looking for jobs because of waves of layoffs. And you may have read about many major employers, especially in the tech sector, reining in remote workers and enforcing return to office policies. Finding any job right now presents big challenges, and finding a remote job now will prove even more challenging.